Capacity of iterative detection and decoding of space-time bit-interleaved coded-modulation BPSK codes

Simon Hirst*, Allster G. Burr

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

We consider MIMO schemes with Nt transmit and Nr receive antennas using BPSK modulation in quasistatic fading. We show that space-time (ST) bit-interleaving coded-modulation (BICM) approaches mapping binary codes to BPSK ST codes show a loss over coded-modulation (CM) MIMO capacity. This is despite the use of an optimal inner detector and is illustrated using capacity CDFs for the CM and ST-BICM cases. The CDFs are translated to plots of outage probabilities as functions of SNR. For capacity-achieving schemes, these indicate that SNR losses of ST-BICM over CM approaches decrease with Nr and increase with Nt. Finally, we amend our method for where the outer binary code is only capacity-approaching we find this provides accurate predictions of FERs for ST-BICM using an outer turbo code.

Original languageEnglish
Pages2299-2302
Number of pages4
Publication statusPublished - 2004
Event2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2004 - Barcelona, Spain
Duration: 5 Sept 20048 Sept 2004

Conference

Conference2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2004
Country/TerritorySpain
CityBarcelona
Period5/09/048/09/04

Keywords

  • Bit-interleaving
  • Channel capacity
  • Iterative decoding
  • MIMO
  • Space-time coding
  • Turbo codes

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